page_title: Cuyahoga Formation
hierarchical_section_title: Cuyahoga Formation
caption_attribution_description: Eastern Ohio's Cuyahoga Formation is a Lower Mississippian marine unit composed of mixed siliciclastics - shales, siltstones, and sandstones. Fine-grained and coarse-grained intervals are often designated as separate members. The gray sandstone shown here has been assigned to the Fairfield Member. This outcrop occurs unconformably just below the Black Hand Sandstone. Stratigraphy: Fairfield Member, Cuyahoga Formation, Kinderhookian Stage, lower Lower Mississippian Locality: low outcrop near the southwestern edge of the Lower Falls plunge pool basin, Old Man's Cave Gorge, Hocking Hills, southeastern Ohio, USA (~39º 25' 56.43&quot; North latitude, ~82º 32' 39.90&quot; West longitude)
context_page_description: The Cuyahoga Formation is a geologic formation in Ohio. The age of the formation is difficult to determine, because of a lack of diagnostic fossils. Roughly, the formation dates from the Late Kinderhookian to the Middle Osagean. Eight members are recognized, among them the Orangeville Shale, Sharpsville Sandstone, and Meadville Shale.
  It preserves fossils dating to the Mississippian subperiod of the Carboniferous period.
context_section_description: The Cuyahoga Formation is a geologic formation in Ohio. The age of the formation is difficult to determine, because of a lack of diagnostic fossils. Roughly, the formation dates from the Late Kinderhookian (354.8 to 350.8 million years ago) to the Middle Osagean (347.7 to 344.5 million years ago). Eight members are recognized, among them the Orangeville Shale, Sharpsville Sandstone, and Meadville Shale.
  It preserves fossils dating to the Mississippian subperiod of the Carboniferous period.
caption: Gray sandstone (Fairfield Member, Cuyahoga Formation; Hocking Hills, Ohio)
exif: {"Image ImageWidth": "4000", "Image ImageLength": "3000", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Make": "Canon", "Image Model": "Canon PowerShot D10", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Elements 13.0 (Macintosh)", "Image DateTime": "2017:05:26 00:26:20", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "304", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1226", "Thumbnail JPEGInterchangeFormatLength": "10724", "EXIF ExposureTime": "1/15", "EXIF FNumber": "14/5", "EXIF ISOSpeedRatings": "80", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2017:05:17 10:28:05", "EXIF DateTimeDigitized": "2017:05:17 10:28:05", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "3", "EXIF ShutterSpeedValue": "125/32", "EXIF ApertureValue": "95/32", "EXIF ExposureBiasValue": "-2/3", "EXIF MaxApertureValue": "95/32", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "31/5", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "4000", "EXIF ExifImageLength": "3000", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "4000", "Interoperability RelatedImageLength": "3000", "EXIF InteroperabilityOffset": "1076", "EXIF FocalPlaneXResolution": "4000000/243", "EXIF FocalPlaneYResolution": "1500000/91", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Landscape"}